This resource covers Unit 4 of the MCR3U Functions course (Grade 11, University Preparation), fully aligned with the Ontario Ministry of Education curriculum. Topics include laws of exponents (integer, fractional, and negative), the exponential function f(x) = a·b^x, exponential growth and decay models, compound interest and present value, and solving exponential equations algebraically. A bonus enrichment section introduces logarithms for students wishing to go further (MHF4U preview).Includes